Icing may refer to:

• Atmospheric icing, occurs when water droplets freeze on objects they contact
• Icing conditions, atmospheric conditions that can lead to the formation of water ice on various surfaces

• Aufeis, also called icing, a sheet-like mass of layered ice that forms from the freezing of successive flows of groundwater
• Claire's, which has a brand of accessories and jewelry called Icing
• Cryotherapy, also called icing, the cooling of body parts, often using ice or cold packs, to decrease pain and inflammation
• Fuel system icing inhibitor, an additive to aviation fuels that prevents the formation of ice in fuel lines
• Icing (drinking game), a drinking game involving the consumption of large quantities of Smirnoff Ice in inappropriate situations
• Icing (food), a sweet and often creamy glaze made of sugar used to cover or decorate baked goods, such as cakes, cookies or donuts
  • Powdered sugar, also known as confectioners' sugar or icing sugar, is a very fine sugar used for icing, frosting and other decorations
  • Royal icing, a hard, white icing, made from softly beaten egg whites, powdered sugar, and sometimes lemon or lime juice
• Icing (ice hockey), an ice hockey rule intended to discourage intentionally whacking the puck away from a team's goal to run out the clock
• Icing (nautical), sea spray that freezes upon contact with ships, occurs during very cold and windy weather, can cause a ship to capsize
• Icing the kicker, is a tactic employed by defending teams in American or Canadian football to disrupt the process of kicking a field goal just prior to the snap.